Martin Stadium is an outdoor athletic stadium in the northwest United States, on the campus of Washington State University in Pullman, Washington. It is the home field of the Washington State Cougars of the Pac-12 Conference. Its full name is Gesa Field at Martin Stadium due to Richland-based Gesa Credit Union signing a 10-year sponsorship deal in 2021 for the playing surface; it has used artificial turf since its inception in 1972, with infilled FieldTurf used since 2000.